王接喜

孙吉平博士论文 "Rational catalyst layer design enables tailored transport channels for efficient CO2 electrochemical reduction to multi-carbon products" 被Energy & Environmental Science接收发表

发布时间：2025-02-10

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Membrane electrode assemblies (MEAs) have been developed for electrochemical conversion of CO2 to high-value multi-carbon (C2+) products at industrial current densities ( j 4 200 mA cm2). However, the effective and simultaneous modulation of CO2 and H2O mass transfer within MEA remains a critical issue, particularly at the three-phase interface. Herein, CO2 and H2O channels are incorporated into the catalyst layer network to benefit the micro-environment. The balance of local CO2 and H2O at the reaction interface is attained by regulating the catalyst-coated ionomer. In situ DEMS further confirms that the rational routes are successfully established for mass transfer management. The interfacial distribution of CO2 and H2O is indepth investigated via in situ ATR-SEIRAS and molecular dynamics (MD) simulation. Through reasonable catalyst layer design, CO2-to-C2+ performance is substantially enhanced, exhibiting remarkable selectivity to C2+ products with a faradaic efficiency (FE) of 89.4  0.69% and a partial current density of 536  4.14 mA cm2. The optimized Cu-GDE also exhibits excellent stability of 410 h at a total current of 2 A.

全文链接：https://pubs.rsc.org/en/Content/ArticleLanding/2025/EE/D4EE03743J